文献类型：期刊文献

中文题名：火焰燃烧制备纳米氧化铝及其在锂电池隔膜涂覆中的应用研究

英文题名：Preparation of nano-alumina by flame spray pyrolysis and application in separator coating for lithium-ion batteries

作者：朱亭仪[1];胡彦杰[1]

机构：[1]华东理工大学材料科学与工程学院,上海200237

年份：2025

卷号：45

期号：11

起止页码：87

中文期刊名：现代化工

外文期刊名：Modern Chemical Industry

收录：;北大核心:【北大核心2023】；

基金：国家自然科学基金(22378128,22108079,U22B20143,U22A20429);上海市技术委员会项目(22dz1205900)。

语种：中文

中文关键词：氧化铝;火焰燃烧法;锂离子电池;涂覆隔膜

外文关键词：aluminium oxide;flame spray pyrolysis;lithium-ion batteries;coated separator

摘要：采用火焰燃烧法(FSP)制备了高分散性的纳米氧化铝,利用XRD、TEM以及DLS对其进行了表征。以制备的纳米氧化铝为涂覆材料,采用简单的线棒涂覆法在商用PE隔膜表面均匀涂覆超薄氧化铝涂层,并对涂覆隔膜的形貌结构、物理化学性能、电化学性能等进行了表征。结果表明,纳米氧化铝涂层有效降低了涂层厚度和面密度,并且改善了隔膜的润湿性、孔隙率、热稳定性和机械强度。采用纳米氧化铝/PE涂层隔膜制备的NCM811扣式电池在5 C大倍率下的放电容量为154.3 mAh/g,在1 C循环200次后容量保持率为91.4%,表现出优异的电化学性能。
Nano-sized alumina with high dispersivity is synthesized via flame spray pyrolysis(FSP)method,and characterized by means of X-ray diffraction(XRD),transmission electron microscopy(TEM),and dynamic light scattering(DLS).Taking the prepared nano-alumina as the coating material,a thin layer of alumina is evenly deposited onto commercial polyethylene(PE)separator via a straightforward wire-bar coating method.Morphological structure,physicochemical performances,and electrochemical properties of the coated separator are thoroughly examined.Notably,the nano-alumina/PE coating separators exhibit substantial enhancements in areal density,porosity,electrolyte wettability,thermal stability and mechanical strength.NCM811 coin cells assembled with the nano-alumina/PE coating separators presents a discharge capacity of 154.3 mAh/g at a high rate of 5 C,and exhibits a capacity retention of 91.4%after 200 cycles at 1C,showcasing their superior electrochemical performance.